Prokaryotic Cells Vs. Eukaryotic Cells | Lecture Note

University:
Brigham Young University
Course:
MMBIO 221 | General Microbiology
Academic year:

2023
Views:

137

Pages:

10
Author:

Hallie Randolph

Prokaryotic Cells Vs. Eukaryotic Cells What is the first thing that we need to know about cells?  All cells fall into one of the two major classifications of either prokaryotic or eukaryotic. What’s the difference between prokaryotes and eukaryotes? cells were here first and for billions of years were the only form of life on Earth. All prokaryotic organisms are unicellular  Prokaryotic cells appeared on earth long after prokaryotic cells but they are much more advanced. Eukaryotic organisms unlike prokaryotic can be unicellular or multicellular.  Eukaryotic  Vibrio fischeri  Glow in the dark bacteria  Helps it survive in the ocean  Lives in fish and other marine life Characteristics of Prokaryotes Prokaryotes are the simplest type of cell.  Oldest type of cell appeared about four billion years ago.  Prokaryotes are the largest group of organisms  Prokaryotes unicellular organisms that are found in all environments.  Prokaryotes do not have a nuclear membrane . Their circular shaped genetic material dispersed throughout cytoplasm.  Prokaryotes do not have membrane-bound organelles  Prokaryotes have a simple internal structure.  Prokaryotes are smaller in size when compared to Eukaryotes.  What do prokaryotic cell look like? characteristics of eukaryotes        Eukaryotic cells appeared approximately one billion years ago Eukaryotes are generally more advanced than prokaryotes Nuclear membrane surrounds linear genetic material (DNA) Unlike prokaryotes, eukaryotes have several different parts. Prokaryote’s organelles have coverings known as membranes. Eukaryotes have a complex internal structure. Eukaryotes are larger than prokaryotes in size What do eukaryotic cells look like? Mitochondria Nucleus Cytoplasm Golgi Complex Endoplasmic Reticulum Cell Membrane Prokaryotes vs Eukaryotes: Differences Prokaryotes  Organelles lack a membrane  Ribosomes are the only organelles  Genetic material floats in the cytoplasm (DNA and RNA)  Circular DNA  Unicellular Cells are smaller in size  Has larger number of organisms  Eukaryotes  Organelles covered by a membrane  Multiple organelles including ribosomes  Membrane covered Genetic material  Linear DNA  May be multicellular or unicellular  Cells are larger in size  Has smaller number of organisms How do the similarities line up? Lets See!!!     Both types of cells have cell membranes (outer covering of the cell) Both types of cells have ribosomes Both types of cells have DNA Both types of cells have a liquid environment known as the cytoplasm